Columbia School Envelope; No Date; 16.3 cm (w) x 8.9 cm (h); Unused envelope from the Columbian School of Osteopathy, Medicine and Surgery, Kirksville, MO. On front of envelope is image of Columbian School with the heading - "The Columbian School of Osteopathy, Medicine and Surgery, Dr. M.L. Ward, Pres. Kirksville, Missouri."; Envelope has several slight smudges and scuffs on its front and back.